55results about How to "Achieve interference fit" patented technology

The invention discloses a multi-station pinion shaft pressing assembling machine which comprises a stand, a steel-shaft feeding device, a pinion feeding device, a pre-positioning clamp, a shaft pressing assembling device, a transmission mechanism and a control system. The transmission mechanism is arranged on the stand and comprises a motor, a main transmission wheel, an auxiliary transmission wheel and a transmission chain or a transmission belt; the axes of all the transmission wheels and the motor are arranged horizontally; the shaft of the main transmission wheel is connected with the shaft of the motor; the pre-positioning clamp is fixedly connected with the transmission chain or the transmission belt; the motor is controlled by the control system to drive the transmission chain or the transmission belt to transmit intermittently in a positioning way; a shaft dropping station, a pinion pushing station and a shaft pressing assembling station are arranged on the stand along the transmission direction of the transmission chain or the transmission belt; and the steel-shaft feeding device, the pinion feeding device and the shaft pressing assembling device are arranged on the shaft dropping station, the pinion pushing station and the shaft pressing assembling station correspondingly. By adoption of the multi-station pinion shaft pressing assembling machine, the efficiency of assembling the pinion and the steel shaft assembly can be effectively improved, the interference fit of the pinion and the steel shaft can be realized reliably, the discharging can be convenient, the manpower can be saved, and the shaft pressing assembling of the pinion with different types and the steel shaft can be realized through adjustment or reconstruction.

The invention belongs to the field of electrostatic plate-type electric fields and discloses an electrostatic plate type electric field. The electrostatic plate type electric field comprises a shell;multiple high-voltage negative plates, multiple low-voltage negative plates, multiple positive plates, a first connecting rod, a second connecting rod and a third connecting rod are arranged in the shell; the multiple high-voltage negative plates are inserted into the first connecting rod in a penetrating mode and connected with the first connecting rod in an interference fit mode; the multiple low-voltage negative plates are inserted into the second connecting rod in a penetrating mode and connected with the second connecting rod in an interference fit mode; and the multiple positive plates are inserted into the third connecting rod in a penetrating mode and connected with the third connecting rod in an interference fit mode. The electrode plates and the connecting rods of the electrostatic plate type electric field are in interference fit, connection is stable, assembling is convenient, and meanwhile, the invention further provides an assembling tool and an assembling method.

The invention relates to an anti-rotating insulating support and an anti-rotating method thereof. The anti-rotating method is characterized in that the outer side surface of a metal inner sleeve and the inner side surface of a middle medium are respectively provided with a first platform mutually fit along the direction of the pipe length so as to lead one part of a curve surface attached tightlybetween the metal inner sleeve and the middle medium to be attached tightly in a plane; an outer ring of the part of the cross section of the metal inner sleeve, provided with the first platform, is a round flaw shape of a round flaw angle between 15 degrees to 90 degrees; the outer side surface of the middle medium and the inner side surface of the metal outer ring are respectively provided witha second platform fit along the direction of the pipe length so as to lead one part of a curve surface attached tightly between the middle medium and the metal outer ring to be attached tightly in a plane; and an outer ring of the part of the cross section of the middle medium, provided with the second platform, is a round flaw shape of a round flaw angle between 15 degrees to 60 degrees. The invention can prevent relative rotation among three-layer parts of the insulating support, simultaneously has simple method, easy processing, low cost and reliable work.

The invention provides an interference assembling tool for a cylindrical part. The interference assembling tool for the cylindrical part comprises a jack. The jack comprises a cylinder body and a telescopic piston rod. A through hole axially penetrating through the cylinder body and the piston rod is formed in the jack. A guide rod is arranged in the through hole in a penetrating mode. A left blocking piece and a right blocking piece are installed at the two ends of the guide rod respectively. The jack is located between the left blocking piece and the right blocking piece. The cylindrical part is assembled in a component under the pushing force of the piston rod of the jack, and therefore interference assembling of the cylindrical part is achieved, the whole assembling process is conveniently and fast conducted, time-saving and labor-saving, one or two cylindrical parts can also be assembled once, and assembling efficiency is improved. The interference assembling tool for the cylindrical part is suitable for interference assembling of cylindrical parts of all kinds of sizes, and is wider in applicable range.

The invention discloses a constrained ceramic-metal composite bulletproof armor plate and a preparation method thereof. It is composed of a plurality of constrained ceramic-metal composite ballistic-resistant units, and each constrained ceramic-metal composite ballistic-resistant unit includes a metal back plate and a metal constrained plate. and the ceramic block, the metal constraining plate and the ceramic block are arranged on the metal back plate, the ceramic block is arranged inside the metal constraining plate, and are assembled and connected with the metal constraining plate through interference fit. The constrained ceramic-metal composite bulletproof armor plate of the present invention has broad application prospects in various bulletproof occasions such as armed helicopters, armored vehicles, ships and tanks.

The invention discloses a spring fixing structure of a rolling rotor type compressor and the rolling rotor type compressor, and belongs to the technical field of compressors. The spring fixing structure of the rolling rotor type compressor comprises a spring hole, a fixing chamber and a spring, wherein the spring hole is formed in a cylinder body and extends from the outer wall surface into a slip sheet groove used for mounting a slip sheet in the radial direction of a cylinder; the fixing chamber is formed in the cylinder body and structured by a part, close to the outer wall surface of the cylinder, of the spring, wherein the part is enlarged along the spring hole diameter; the spring is provided with a partial pressing part which can be freely telescoped and is arranged in the spring hole and a radially-enlarged fixing part which is connected with the partial pressing part; a partial pressing end of the partial pressing part abuts against the slip sheet; the diameter of the fixing part is larger than that of the spring hole, and the fixing part is supported into the fixing chamber; a part, abutting against the spring, of the fixing chamber, is a plane through which the fixing part of the spring can be stably propped, and thus the spring can be continuously and effectively fixed, and as a result, the sealing between the slip sheet and a roller can be ensured.

The present invention relates to the technical field of disposable sanitary products, in particular to a servo conveying mechanism after the baby's pull-up pants are folded in half. wheel, the support frame is strip-shaped and is formed by splicing mounting plates made of rigid materials, the thickness of the mounting plate is 1-3 mm, a plurality of mounting holes are opened on the mounting plate, and the passive guide wheel The thickness of the passive guide wheel is 10-20mm. A round belt in a closed-loop state is stretched on the active guide wheel and each passive guide wheel. The diameter of the round belt is the same as that of the passive guide wheel. The thickness is the same. The utility model solves the phenomenon of inclination and wrinkling of the pull-up pants due to friction during the conveying process of the discontinuous pull-up pants crotch portion due to friction.